package com.song.Interceptor;

import com.song.utils.CurrentHolder;
import com.song.utils.JwtUtils;
import io.jsonwebtoken.Claims;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import java.util.HashMap;
import java.util.Map;

@Slf4j
@Component
public class TokenInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        log.info("preHandle....");
        String token = request.getHeader("token");
        Integer id;
        if(token == null || token.isEmpty()){
            log.info("token为空");
            response.setStatus(HttpServletResponse.SC_UNAUTHORIZED); // 401
            return false;
        }

        try {
           Claims userInfo = JwtUtils.parseToken(token);
           id = (Integer) userInfo.get("id");

        } catch (Exception e){
            log.info("token无效");
            response.setStatus(HttpServletResponse.SC_UNAUTHORIZED); // 401
            return false;
        }

        CurrentHolder.setCurrentId(id);
        log.info("token有效");
        return true;
    }


    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
//        HandlerInterceptor.super.postHandle(request, response, handler, modelAndView);
        CurrentHolder.remove();
        log.info("postHandle....");
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
//        HandlerInterceptor.super.afterCompletion(request, response, handler, ex);
        log.info("afterCompletion....");
    }
}
